RF Modulator Questions

[ppppenguin]

Some kind of signal strength meter, as used by TV aerial installers, is very useful when setting up this kind of installation. I'd say it was essential to get good results with any kind of multichannel distribution system. Without one you're just guessing. Not too bad with a single channel, tolerable with a couple of widely spaced channels, impossible when you have three or more.

The better ones are actually simple spectrum analysers, with a CRT (or LCD) display showing you a load of channels at once. Or you can zoom in to a single channel to check that VSB is really working.

I can't give you any specific makes, certainly not ones in the USA (I'm in the UK).

If you're lucky enough to have a proper spectrum analyser that will do a very good job.